In his encyclical Deus Caritas Est, Pope Benedict XVI explores the nature of Christian love, emphasizing the inseparable bond between love of God and love of neighbor. The text examines the concept of eros and agape, arguing that the biblical understanding of love encompasses both the "ascending" and "descending" forms, ultimately finding unity in the figure of Christ. The Pope then delves into the Church's responsibility to practice love, discussing the historical development of charity within the Church and its relationship to justice. He stresses that charity is a fundamental aspect of the Church's being and that it should be pursued independently of ideologies and without the intention of proselytism. Ultimately, the text concludes with an appeal to prayer, emphasizing the vital importance of a personal relationship with God as the foundation for authentic love and action.

Link to the encyclical: https://www.vatican.va/content/benedict-xvi/en/encyclicals/documents/hf_ben-xvi_enc_20051225_deus-caritas-est.html